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- [2] DIRECT CALCULATION OF NATURAL ORBITALS OF 2-ELECTRON SYSTEMS ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1985, 40 (10): : 995 - 997
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- [4] 1/Z PERTURBATION EXPANSION FOR NATURAL ORBITALS OF 2-ELECTRON ATOM JOURNAL OF CHEMICAL PHYSICS, 1970, 52 (09): : 4459 - &
- [7] SEPARATED WAVEFUNCTIONS FOR GROUND STATE OF 2-ELECTRON ATOMS JOURNAL OF CHEMICAL PHYSICS, 1970, 52 (03): : 1169 - &
- [9] DIRECT DETERMINATION OF NATURAL ORBITALS + NATURAL EXPANSION COEFFICIENTS OF MANY-ELECTRON WAVEFUNCTIONS .1. NATURAL ORBITALS IN GEMINAL PRODUCT APPROXIMATION JOURNAL OF CHEMICAL PHYSICS, 1964, 40 (12): : 3640 - &
- [10] CALCULATION OF NATURAL ORBITALS AND WAVEFUNCTIONS BY PERTURBATION THEORY JOURNAL OF CHEMICAL PHYSICS, 1968, 48 (07): : 3169 - &